By Pentair Pool Products
Part # 4600-0004
Manufacturer Code 270004
BULKHEAD UNION, 1 1/2" X 2" (SET)-BLACK (270004)
My cartridge filter is a Pentair CCP500 or 520 and was installed in June 2001. The bulkhead union fitting which I'm replacing is union end x threaded to mate with the internal fitting. The threaded end has an outside diameter of approximately 2-1/4". It appears from the picture of your fitting that it has a union end x plain end.
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Hi, Alvin. This Union kit includes the tail end which is what the PVC is glued to, the nut which is what connects the tale end to the tank bulkhead and the o-rings.
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